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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2021-03-13 07:54:12 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2021-03-13 07:54:12 +0000 |
commit | 4754ed45b607e82450a5e31fea1da3ba61433b04 (patch) | |
tree | 3554490bdc003e6004f605abe41929cdf98b0651 /src/lib/trie/node.lua | |
parent | Initial commit. (diff) | |
download | dnsjit-upstream/1.1.0+debian.tar.xz dnsjit-upstream/1.1.0+debian.zip |
Adding upstream version 1.1.0+debian.upstream/1.1.0+debian
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/lib/trie/node.lua')
-rw-r--r-- | src/lib/trie/node.lua | 84 |
1 files changed, 84 insertions, 0 deletions
diff --git a/src/lib/trie/node.lua b/src/lib/trie/node.lua new file mode 100644 index 0000000..7fdc39d --- /dev/null +++ b/src/lib/trie/node.lua @@ -0,0 +1,84 @@ +-- Copyright (c) 2020, CZ.NIC, z.s.p.o. +-- All rights reserved. +-- +-- This file is part of dnsjit. +-- +-- dnsjit is free software: you can redistribute it and/or modify +-- it under the terms of the GNU General Public License as published by +-- the Free Software Foundation, either version 3 of the License, or +-- (at your option) any later version. +-- +-- dnsjit is distributed in the hope that it will be useful, +-- but WITHOUT ANY WARRANTY; without even the implied warranty of +-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +-- GNU General Public License for more details. +-- +-- You should have received a copy of the GNU General Public License +-- along with dnsjit. If not, see <http://www.gnu.org/licenses/>. + +-- dnsjit.lib.trie.node +-- Node of trie, which contains the value and key. +-- .SS Set a node's value. +-- node:set(42) +-- .SS Get a node's key and value. +-- local key = node:key() +-- local val = node:get() +module(...,package.seeall) + +require("dnsjit.lib.trie_h") +local ffi = require("ffi") +local C = ffi.C +local log = require("dnsjit.core.log") +local module_log = log.new("lib.trie.node") + +TrieNode = {} + +-- Create a new node object. +function TrieNode.new(trie, val, key, keylen) + local self = setmetatable({ + _key = key, + _keylen = keylen, + _val = val, + _trie = trie, + _log = log.new("lib.trie.node", module_log), + }, { __index = TrieNode }) + + return self +end + +-- Return key and keylen of this node. +-- Key is string or byte array if the trie's +-- .I +-- binary +-- setting is set to true. +function TrieNode:key() + if self._trie._binary then + local key = ffi.new("uint8_t[?]", self._keylen) + ffi.copy(key, self._key, self._keylen) + return key, self._keylen + else + return ffi.string(self._key, self._keylen), self._keylen + end +end + +-- Return the Log object to control logging of this instance or module. +function TrieNode:log() + if self == nil then + return module_log + end + return self._log +end + +-- Get the value of this node. +function TrieNode:get() + return ffi.cast(self._trie._ctype, self._val[0]) +end + +-- Set the value of this node. +function TrieNode:set(value) + value = ffi.cast('void *', value) + self._val[0] = value +end + +-- dnsjit.lib.trie (3) +return TrieNode |